fyrox-impl 1.0.1

// Copyright (c) 2019-present Dmitry Stepanov and Fyrox Engine contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

//! Curve resource holds a [`Curve`]

use crate::{
    asset::{io::ResourceIo, Resource, ResourceData},
    core::{
        io::FileError, math::curve::Curve, reflect::prelude::*, uuid::Uuid, visitor::prelude::*,
        TypeUuidProvider,
    },
};
use std::error::Error;
use std::{
    fmt::{Display, Formatter},
    path::Path,
};
use uuid::uuid;

pub mod loader;

/// An error that may occur during curve resource loading.
#[derive(Debug)]
pub enum CurveResourceError {
    /// An i/o error has occurred.
    Io(FileError),

    /// An error that may occur due to version incompatibilities.
    Visit(VisitError),
}

impl Display for CurveResourceError {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        match self {
            CurveResourceError::Io(v) => {
                write!(f, "A file load error has occurred {v:?}")
            }
            CurveResourceError::Visit(v) => {
                write!(
                    f,
                    "An error that may occur due to version incompatibilities. {v:?}"
                )
            }
        }
    }
}

impl From<FileError> for CurveResourceError {
    fn from(e: FileError) -> Self {
        Self::Io(e)
    }
}

impl From<VisitError> for CurveResourceError {
    fn from(e: VisitError) -> Self {
        Self::Visit(e)
    }
}

/// State of the [`CurveResource`]
#[derive(Debug, Clone, Visit, Default, Reflect)]
pub struct CurveResourceState {
    /// Actual curve.
    pub curve: Curve,
}

impl ResourceData for CurveResourceState {
    fn type_uuid(&self) -> Uuid {
        <Self as TypeUuidProvider>::type_uuid()
    }

    fn save(&mut self, _path: &Path) -> Result<(), Box<dyn Error>> {
        // TODO: Add saving.
        Err("Saving is not supported!".to_string().into())
    }

    fn can_be_saved(&self) -> bool {
        false
    }

    fn try_clone_box(&self) -> Option<Box<dyn ResourceData>> {
        Some(Box::new(self.clone()))
    }
}

impl TypeUuidProvider for CurveResourceState {
    fn type_uuid() -> Uuid {
        uuid!("f28b949f-28a2-4b68-9089-59c234f58b6b")
    }
}

impl CurveResourceState {
    /// Load a curve resource from the specific file path.
    pub async fn from_file(path: &Path, io: &dyn ResourceIo) -> Result<Self, CurveResourceError> {
        let bytes = io.load_file(path).await?;
        let mut visitor = Visitor::load_from_memory(&bytes)?;
        let mut curve = Curve::default();
        curve.visit("Curve", &mut visitor)?;
        Ok(Self { curve })
    }
}

/// Type alias for curve resources.
pub type CurveResource = Resource<CurveResourceState>;